The Continuum Between Hexagonal Planar and Trigonal Planar Geometries**
Publication Name
Angewandte Chemie - International Edition
Abstract
New heterometallic hydride complexes that involve the addition of {Mg−H} and {Zn−H} bonds to group 10 transition metals (Pd, Pt) are reported. The side-on coordination of a single {Mg−H} to Pd forms a well-defined σ-complex. In contrast, addition of three {Mg−H} or {Zn−H} bonds to Pd or Pt results in the formation of planar complexes with subtly different geometries. We compare their structures through experiment (X-ray diffraction, neutron diffraction, multinuclear NMR), computational methods (DFT, QTAIM, NCIPlot), and theoretical analysis (MO diagram, Walsh diagram). These species can be described as snapshots along a continuum of bonding between ideal trigonal planar and hexagonal planar geometries.
Open Access Status
This publication may be available as open access
Volume
61
Issue
44
Article Number
e202211948
Funding Number
100010434
Funding Sponsor
Australian Nuclear Science and Technology Organisation